Hummer H1 with new engine rebuilt. Fuel lift pump not activated
 

Hi guys

Im new here. But im having issues with my hummer.
I just rebuilt my engine wiht new block and etc. And now as im trying to start i dont hear the fuel lift pump as i turn the key.

I checke the fuses and all seems to be in order. :(

Take a look at your Oil Pressure sender/switch also.

Im not sure what you mean, how is that helping me ?

Check to see that your lift pump is getting power, Jump the pump with a 12v source to see if it powers up. A defective Oil pressure switch on some models will prevent the pump from working.

http://www.flashoffroad.com/Diesel/t...t/liftpump.htm

https://www.kennedydiesel.com/detail.cfm?ID=263

ok thank you, that maby explains why i didnt get any pressure on the gage while i was cranking.....